A photoshopped depiction of the creature. Not all of the details match its description but it was the best I could do.
The first description of this bizarre event was found in the Tacoma Daily Ledger of July 3rd, 1893. A group of men were on a fishing expedition at Henderson Island off Puget Sound when they (as well as a small group of surveyors) witnessed the creature in question.
The Incident[]
A loud noise was followed by a strong electric current and bright lights – and two men who touched the water were rendered senseless immediately. The creature that seemed to be the origin of the light and sound dived beneath the water at this point, but the light that shone from its body remained visible. The beast was described as 150ft (or 45.7m) long and was 30ft (or 9m) wide at its thickest point. Its head was supposedly larger than that of a walrus but resembled this in shape. It had six eyes, all of which were large and dull. The electricity that had previously knocked out two witnesses appeared to come from ‘copper bands’ encircling its body, and it flung out electrified water from hornlike protuberances on its head. In place of a tail, it seemed to have a propeller which revolved. Loren Coleman, a famous cryptozoologist, suggested that the Henderson Island Monster was an unidentified submersible object rather than a living organism. The witnesses would beg to differ. However, if it was a machine, where would such an awesome automaton have come from in the 19th century?